As i can see from previous post, HUE bridge is installed - see screen from mor_2003 3 posts before, Phoscon-GW thing is a HUE Bridge.
The problem was discussed a few time before on the forum and mostly is related to problem with missing switch channel. An item with type switch must be created manually and mapped to color channel .
@mor_2003, check, please, the solution in hue binding documentation
Or here [SOLVED] Setting up HUE lights for dimmer AND ON/Off switch